Madan M. Rehani
Harvard University
Internal medicineRadiologyEffective dose (radiation)Radiological weaponMedical physicsFluoroscopyRadiation protectionMEDLINERadiation exposureInterventional cardiologyRadiation doseNuclear medicineMedical imagingRadiographyInterventional radiologyComputed tomographyImage qualityMedicineDosimetryDeveloping country
Publications 245
In this study, which is the first of its kind in the gulf region, eye doses of interventional cardiologists and nurses were measured using active dosimeters for left and right eyes, in 60 percutaneous coronary interventions in three main hospitals in Kuwait. The dose given in terms of Hp(0.07) per procedure when ceiling suspended screens were used by main operators ranged from 18.5 to 30.3 µSv for the left eye and from 12.6 to 23.6 µSv for the right eye. Taking into account typical staff workloa...
#1Shivam Rastogi (Harvard University)H-Index: 3
#2Ramandeep Singh (Harvard University)H-Index: 10
Last. Mannudeep K. Kalra (Harvard University)H-Index: 64
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Purpose:To assess the frequency, appropriateness, and radiation doses associated with multiphase computed tomography (CT) protocols for routine chest and abdomen–pelvis examinations in 18 countries...
5 CitationsSource
#1Narjes Moghadam (Centre Hospitalier Universitaire de Sherbrooke)
#2Madan M. Rehani (Harvard University)H-Index: 32
Last. Moulay Ali Nassiri (Centre Hospitalier Universitaire de Sherbrooke)H-Index: 3
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Abstract null null Purpose null To estimate percentage of patients undergoing multiple CT exams leading to cumulative effective dose (CED) of more than 25, 50, 75 and 100 mSv in one year and assess per capita and the collective effective dose. null null null Methods null Data from a regional hospital network was collected retrospectively using radiation dose monitoring system at 6 facilities with 8 CT scanners. The data was analyzed to find number of patients in different dose groups, their age,...
#1Narjes Moghadam (Centre Hospitalier Universitaire de Sherbrooke)
#1Narjes MoghadamH-Index: 3
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Abstract null null Purpose null To investigate retrospective classification of adult patients into small, average, and large based on effective diameter (EDia) from localizer image of computed tomography (CT) scans and to develop regional diagnostic reference levels (DRLs) and achievable doses (AD). null null null Method null The patients falling within the mean ± standard deviation (SD) of EDia were classified as average; those below this range as small and above as large. The CTDIvol, dose-len...
#1Charles H Brower (Harvard University)H-Index: 1
#2Madan M. Rehani (Harvard University)H-Index: 32
Millions of patients benefit from medical imaging every single day. However, we have entered an unprecedented era in imaging practices wherein 1 out of 125 patients can be exposed to effective dose...
3 CitationsSource
#1Mannudeep K. Kalra (Harvard University)H-Index: 64
#2Madan M. Rehani (Harvard University)H-Index: 32
KEY POINTS • Recent papers have shown examples of the methodology involved in integrating image quality with radiation dose and assessing acceptable quality dose (AQD).• As a further step in that direction, translating a 5-point score into a 5-star rating shall be helpful for wider and uniform application and shall be in line with the popular use of the 5-star rating.
#1Mamoru Takenaka (Kindai University)H-Index: 18
#2Makoto Hosono (Kindai University)H-Index: 21
Last. Kosuke Minaga (Kindai University)H-Index: 18
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Objectives null The transpapillary drainage by endoscopic retrograde cholangiopancreatography (ERCP-D) cannot be performed without fluoroscopy, and there are many situations in which fluoroscopy is required even in endoscopic ultrasound-guided drainage (EUS-D). Previous studies have compared the efficacy, but not the radiation exposure of EUS-D and ERCP-D. While radiation exposure in ERCP-D has been previously evaluated, there is a paucity of information regarding radiation doses in EUS-D. This ...
1 CitationsSource
The radiation protection principles of justification, optimization, and dose limitation as enumerated by the International Commission on Radiological Protection (ICRP) have been guiding light for the profession for over three decades. The dose limitation does not apply to medical exposure but keeping patients' doses low is achieved through optimization, particularly by developing and using diagnostic reference levels (DRLs). There are new findings that demonstrate that despite using the best pos...
2 CitationsSource
#1Madan M. Rehani (Harvard University)H-Index: 32
#2Donald L. Miller (FDA: Food and Drug Administration)H-Index: 24
Last. Vinit Baliyan (Harvard University)H-Index: 10
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The article is part of the series of articles on radiation protection. You can find further articles in the special section of the CVIR issue. In addition to the risks from fluoroscopic-guided interventional procedures of tissue injuries, recent studies have drawn attention to the risk of stochastic effects. Guidelines exist for preprocedural planning and radiation management during the procedure. The concept of a substantial radiation dose level (SRDL) is helpful for patient follow-up for tissu...
1 CitationsSource
#1Ronald S. Arellano (Harvard University)H-Index: 32
#2Kai Yang (Harvard University)H-Index: 23
Last. Madan M. Rehani (Harvard University)H-Index: 32
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Objective To identify a patient cohort who received ≥ 100 mSv during a single computed tomography (CT)-guided intervention and analyze clinical information. Materials and methods Using the dose-tracking platform Radimetrics that collects data from all CT scanners in a single hospital, a patient-level search was performed retrospectively by setting a threshold effective dose (E) of 100 mSv for the period from January 2013 to December 2017. Patients who received ≥ 100 mSv in a single day during a ...
7 CitationsSource