Full Text Journal Articles by
Author Bilal Tahir

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Relationship between diabetic retinopathy and diabetic nephropathy; A longitudinal follow-up study from a tertiary care unit of Karachi, Pakistan.

Anum Butt, Nida Mustafa, Asher Fawwad, Saima Askari, Muhammad Saiful Haque, Bilal Tahir, Abdul Basit,

OBJECTIVE:To determine the development and progression of diabetic retinopathy in subjects with diabetic nephropathy. METHODOLOGY:This retrospective longitudinal follow up study was conducted in outpatient department of Baqai Institute of Diabetology and Endocrinology (BIDE), a tertiary care diabetes unit of Karachi Pakistan, from January 2005 to December 2016. Type 2 diabetic ... Read more >>

Diabetes Metab Syndr (Diabetes & metabolic syndrome)
[2020, 14(6):1659-1663]

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Association of vitamin B12 deficiency in people with type 2 diabetes on metformin and without metformin: a multicenter study, Karachi, Pakistan.

Zahid Miyan, Nazish Waris, ,

OBJECTIVE:To assess the prevalence of vitamin B12 deficiency in people with type 2 diabetes mellitus (T2DM) on metformin and without metformin. METHODOLOGY:Between May 2018 and January 2019, this prospective multicenter observational study recruited participants from seven centers in four provinces of Pakistan (Sindh, Punjab, Baluchistan and Khyber Pakhtunkhwa). Participants with ... Read more >>

BMJ Open Diabetes Res Care (BMJ open diabetes research & care)
[2020, 8(1):]

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Glycated hemoglobin (HbA1c) as diagnostic criteria for diabetes: the optimal cut-off points values for the Pakistani population; a study from second National Diabetes Survey of Pakistan (NDSP) 2016-2017.

Abdul Basit, Asher Fawwad, Khalid Abdul Basit, Nazish Waris, Bilal Tahir, Iftikhar Ahmed Siddiqui, ,

AIM:Glycated hemoglobin (HbA1c) cut-off values as diagnostic tool in diabetes and prediabetes with its concordance to oral glucose tolerance test (OGTT) in Pakistani population. METHODOLOGY:Data for this substudy was obtained from second National Diabetes Survey of Pakistan (NDSP) 2016-2017. With this survey, 10 834 individuals were recruited and after excluding known ... Read more >>

BMJ Open Diabetes Res Care (BMJ open diabetes research & care)
[2020, 8(1):]

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Radical accelerated radiotherapy for non-small cell lung cancer (NSCLC): A 5-year retrospective review of two dose fractionation schedules.

Stephen D Robinson, Bilal A Tahir, Katherine A R Absalom, Amila Lankathilake, Tathagata Das, Caroline Lee, Patricia M Fisher, Emma Bates, Matthew Q F Hatton,

BACKGROUND AND PURPOSE:Numerous fractionation regimes are used for inoperable NSCLC patients not suitable for stereotactic ablative radiotherapy. Continuous hyperfractionated accelerated radiotherapy (CHART, 54 Gy, 36 fractions over 12 days) and hypofractionated accelerated radiotherapy (55 Gy, 20 fractions over 4 weeks) are recommended UK schedules. In this single-centre retrospective analysis, we compare both fractionation schemes ... Read more >>

Radiother Oncol (Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology)
[2020, 143:37-43]

Cited: 2 times

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Imaging of regional ventilation: Is CT ventilation imaging the answer? A systematic review of the validation data.

Fiona Hegi-Johnson, Dirk de Ruysscher, Paul Keall, Lizza Hendriks, Yevgeniy Vinogradskiy, Tokihiro Yamamoto, Bilal Tahir, John Kipritidis,

Computed Tomography Ventilation Imaging (CTVI) is an experimental imaging modality that derives regional lung function information from non-contrast respiratory-correlated CT datasets. Despite CTVI being extensively studied in cross-modality imaging comparisons, there is a lack of consensus on the state of its clinical validation in humans. This systematic review evaluates the ... Read more >>

Radiother Oncol (Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology)
[2019, 137:175-185]

Cited: 1 time

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Single breath-held acquisition of coregistered 3D 129 Xe lung ventilation and anatomical proton images of the human lung with compressed sensing.

Guilhem J Collier, Paul J C Hughes, Felix C Horn, Ho-Fung Chan, Bilal Tahir, Graham Norquay, Neil J Stewart, Jim M Wild,

PURPOSE:To develop and assess a method for acquiring coregistered proton anatomical and hyperpolarized 129 Xe ventilation MR images of the lungs with compressed sensing (CS) in a single breath hold. METHODS:Retrospective CS simulations were performed on fully sampled ventilation images acquired from one healthy smoker to optimize reconstruction parameters. Prospective ... Read more >>

Magn Reson Med (Magnetic resonance in medicine)
[2019, 82(1):342-347]

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Impact of multidisciplinary foot care team on outcome of diabetic foot ulcer in term of lower extremity amputation at a tertiary care unit in Karachi, Pakistan.

Musarrat Riaz, Zahid Miyan, Nazish Waris, Syed I H Zaidi, Bilal Tahir, Asher Fawwad, Abdul Basit,

To compare the outcomes of diabetic foot ulcers (DFU) in terms of healing and lower extremity amputation (LEA) rate before and after training of multidisciplinary foot care team (MDFCT). Subjects were categorised into two groups; Group-A cases seen between 1997 and 2006 (before upgrading of training and services of MDFCT) ... Read more >>

Int Wound J (International wound journal)
[2019, 16(3):768-772]

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Feature enhancement framework for brain tumor segmentation and classification.

Bilal Tahir, Sajid Iqbal, Sajid Iqbal, M Usman Ghani Khan, Tanzila Saba, Zahid Mehmood, Adeel Anjum, Toqeer Mahmood,

Automatic medical image analysis is one of the key tasks being used by the medical community for disease diagnosis and treatment planning. Statistical methods are the major algorithms used and consist of few steps including preprocessing, feature extraction, segmentation, and classification. Performance of such statistical methods is an important factor ... Read more >>

Microsc. Res. Tech. (Microscopy research and technique)
[2019, 82(6):803-811]

Cited: 2 times

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Comparison of CT ventilation imaging and hyperpolarised gas MRI: effects of breathing manoeuvre.

Bilal A Tahir, Helen Marshall, Paul J C Hughes, Christopher E Brightling, Guilhem Collier, Rob H Ireland, Jim M Wild,

Image registration of lung CT images acquired at different inflation levels has been proposed as a surrogate method to map lung 'ventilation'. Prior to clinical use, it is important to understand how this technique compares with direct ventilation imaging modalities such as hyperpolarised gas MRI. However, variations in lung inflation ... Read more >>

Phys Med Biol (Physics in medicine and biology)
[2019, 64(5):055013]

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Optimized health care for subjects with type 1 diabetes in a resource constraint society: A three-year follow-up study from Pakistan.

Muhammad Yakoob Ahmedani, Asher Fawwad, Fariha Shaheen, Bilal Tahir, Nazish Waris, Abdul Basit,

BACKGROUND:Inadequate health infrastructure and poverty especially in rural areas are the main hindrance in the optimal management of subjects with type 1 diabetes (T1D) in Pakistan. AIM:To observe effectiveness of diabetes care through development of model clinics for subjects with T1D in the province of Sindh Pakistan. METHODS:A welfare project ... Read more >>

World J Diabetes (World journal of diabetes)
[2019, 10(3):224-233]

Cited: 1 time

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Assessment of the influence of lung inflation state on the quantitative parameters derived from hyperpolarized gas lung ventilation MRI in healthy volunteers.

Paul J C Hughes, Laurie Smith, Ho-Fung Chan, Bilal A Tahir, Graham Norquay, Guilhem J Collier, Alberto Biancardi, Helen Marshall, Jim M Wild,

In this study, the effect of lung volume on quantitative measures of lung ventilation was investigated using MRI with hyperpolarized 3He and 129Xe. Six volunteers were imaged with hyperpolarized 3He at five different lung volumes [residual volume (RV), RV + 1 liter (1L), functional residual capacity (FRC), FRC + 1L, ... Read more >>

J Appl Physiol (1985) (Journal of applied physiology (Bethesda, Md. : 1985))
[2019, 126(1):183-192]

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Prevalence of diabetes, pre-diabetes and associated risk factors: second National Diabetes Survey of Pakistan (NDSP), 2016-2017.

Abdul Basit, Asher Fawwad, Huma Qureshi, A S Shera, ,

OBJECTIVE:The second National Diabetes Survey of Pakistan (second NDSP) was planned to ascertain the updated prevalence of diabetes, pre-diabetes and associated risk factors at the national and provincial levels. RESEARCH DESIGN AND METHODS:The survey was conducted by using multistage clustering technique in all four provinces of Pakistan from February 2016 ... Read more >>

BMJ Open (BMJ open)
[2018, 8(8):e020961]

Cited: 17 times

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Spatial Comparison of CT-Based Surrogates of Lung Ventilation With Hyperpolarized Helium-3 and Xenon-129 Gas MRI in Patients Undergoing Radiation Therapy.

Bilal A Tahir, Paul J C Hughes, Stephen D Robinson, Helen Marshall, Neil J Stewart, Graham Norquay, Alberto Biancardi, Ho-Fung Chan, Guilhem J Collier, Kerry A Hart, James A Swinscoe, Matthew Q Hatton, Jame M Wild, Rob H Ireland,

PURPOSE:To develop and apply an image acquisition and analysis strategy for spatial comparison of computed tomography (CT)-ventilation images with hyperpolarized gas magnetic resonance imaging (MRI). METHODS AND MATERIALS:Eleven lung cancer patients underwent xenon-129 (129Xe) and helium-3 (3He) ventilation MRI and coregistered proton (1H) anatomic MRI. Expiratory and inspiratory breath-hold CTs ... Read more >>

Int J Radiat Oncol Biol Phys (International journal of radiation oncology, biology, physics)
[2018, 102(4):1276-1286]

Cited: 1 time

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Improvement in Neuropathy Specific Quality of Life in Patients with Diabetes after Vitamin D Supplementation.

Uazman Alam, Asher Fawwad, Asher Fawwad, Fariha Shaheen, Bilal Tahir, Abdul Basit, Rayaz A Malik,

Objective:To assess the effect of vitamin D supplementation on neuropathy specific quality of life (NeuroQoL) in patients with painful diabetic neuropathy. Methods:This prospective, open label study was conducted between June 2012 and April 2013. Patients with symptomatic diabetic neuropathy were given a single dose of 600,000 IU intramuscular vitamin D, and ... Read more >>

J Diabetes Res (Journal of diabetes research)
[2017, 2017:7928083]

Cited: 5 times

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Using cognitive fit theory to evaluate patient understanding of medical images.

Judy Wawira Gichoya, Mohammad Alarifi, Ria Bhaduri, Bilal Tahir, Saptarshi Purkayastha,

Patients are increasingly presented with their health data through patient portals in an attempt to engage patients in their own care. Due to the large amounts of data generated during a patient visit, the medical information when shared with patients can be overwhelming and cause anxiety due to lack of ... Read more >>

Annu Int Conf IEEE Eng Med Biol Soc (Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference)
[2017, 2017:2430-2433]

Cited: 0 times

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Impact of field number and beam angle on functional image-guided lung cancer radiotherapy planning.

Bilal A Tahir, Chris M Bragg, Jim M Wild, James A Swinscoe, Sarah E Lawless, Kerry A Hart, Matthew Q Hatton, Rob H Ireland,

To investigate the effect of beam angles and field number on functionally-guided intensity modulated radiotherapy (IMRT) normal lung avoidance treatment plans that incorporate hyperpolarised helium-3 magnetic resonance imaging (3He MRI) ventilation data. Eight non-small cell lung cancer patients had pre-treatment 3He MRI that was registered to inspiration breath-hold radiotherapy planning ... Read more >>

Phys Med Biol (Physics in medicine and biology)
[2017, 62(17):7114-7130]

Cited: 0 times

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Seven Lessons for Implementing a Health Information System.

Lindsey A G Shea, Bilal Tahir, Darel E Heitkamp, Richard B Gunderman,

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2017, 14(11):1513-1514]

Cited: 1 time

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Comparison of hepatic MDCT, MRI, and DSA to explant pathology for the detection and treatment planning of hepatocellular carcinoma.

Lauren M Ladd, Temel Tirkes, Mark Tann, David M Agarwal, Matthew S Johnson, Bilal Tahir, Kumaresan Sandrasegaran,

The diagnosis and treatment plan for hepatocellular carcinoma (HCC) can be made from radiologic imaging. However, lesion detection may vary depending on the imaging modality. This study aims to evaluate the sensitivities of hepatic multidetector computed tomography (MDCT), magnetic resonance imaging (MRI), and digital subtraction angiography (DSA) in the detection ... Read more >>

Clin Mol Hepatol (Clinical and molecular hepatology)
[2016, 22(4):450-457]

Cited: 2 times

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Taking Resident Feedback Seriously: A Hands-on Ultrasound Course.

Bilal Tahir, Dina M Peterson, Darel E Heitkamp, Richard B Gunderman,

Acad Radiol (Academic radiology)
[2016, 23(12):1610-1613]

Cited: 0 times

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The Value of Secretin-Enhanced MRCP in Patients With Recurrent Acute Pancreatitis.

Kumar Sandrasegaran, Bilal Tahir, Udaykamal Barad, Evan Fogel, Fatih Akisik, Temel Tirkes, Stuart Sherman,

The purpose of this study is to assess the additional value of secretin-enhanced MRCP over conventional (non-secretin-enhanced) MRCP in diagnosing disease in patients with recurrent acute pancreatitis.A retrospective review of a radiology database found 72 patients with recurrent acute pancreatitis who had secretin-enhanced MRCP and ERCP correlation within 3 months ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2017, 208(2):315-321]

Cited: 8 times

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PACS and the Erosion of Professional Relationships.

Darel E Heitkamp, Jordan H Cuskaden, Bilal Tahir, Richard B Gunderman,

Acad Radiol (Academic radiology)
[2016, 23(7):905-907]

Cited: 1 time

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Curricula for Teaching MRI Safety, and MRI and CT Contrast Safety to Residents: How Effective Are Live Lectures and Online Modules?

Jordan Swensson, Lane McMahan, Ben Rase, Bilal Tahir,

The advent of the diagnostic radiology core examination and the new ACGME "milestone" evaluation system for radiology residents places new emphasis on topics in MRI and CT safety, and MRI and CT contrast agents. We evaluated whether either lecture-based teaching or online modules would improve baseline resident knowledge in these ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2015, 12(10):1093-1096]

Cited: 5 times

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Comparison of CT-based Lobar Ventilation with 3He MR Imaging Ventilation Measurements.

Bilal A Tahir, Cedric Van Holsbeke, Rob H Ireland, Andrew J Swift, Felix C Horn, Helen Marshall, John C Kenworthy, Juan Parra-Robles, Ruth Hartley, Richard Kay, Chris E Brightling, Jan De Backer, Wim Vos, Jim M Wild,

PURPOSE:To compare lobar lung ventilation computed from expiratory and inspiratory computed tomographic (CT) data with direct measurements of ventilation at hyperpolarized helium 3 ((3)He) magnetic resonance (MR) imaging by using same-breath hydrogen 1 ((1)H) MR imaging examinations to coregister the multimodality images. MATERIALS AND METHODS:The study was approved by the ... Read more >>

Radiology (Radiology)
[2016, 278(2):585-592]

Cited: 10 times

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The utility of secretin-enhanced MRCP in diagnosing congenital anomalies.

Kumaresan Sandrasegaran, Gregory A Cote, Bilal Tahir, Iftikhar Ahmad, Mark Tann, Fatih M Akisik, Chandana G Lall, Stuart Sherman,

PURPOSE: To assess the additional value of secretin-enhanced MRCP (SMRCP) over conventional MRCP in diagnosing divisum. METHODS: Retrospective HIPAA-compliant and IRB-approved review found 140 patients with SMRCP and ERCP correlation within 6 months of each other. All studies were anonymized and the SMRCP images (SMRCP image set) were separated from 2D ... Read more >>

Abdom Imaging (Abdominal imaging)
[2014, 39(5):979-987]

Cited: 6 times

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When quality improvement fails: a case study.

Jordan Swensson, Bilal Tahir, Jennifer Steele, Richard Gunderman,

Acad Radiol (Academic radiology)
[2015, 22(2):256-258]

Cited: 0 times

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