Joel G Fletcher M.D.
Radiologist | Diagnostic Radiology200 1st St SW Rochester MN, 55905
Dr. Joel Fletcher is a radiologist practicing in Rochester, MN. Dr. Fletcher specializes in diagnosing and treating injuries and diseases using medical imaging techniques such as X-Rays, magnetic resonance imaging and computed tomography exams. These techniques offer accurate visibility to the inside of the patients body and help to detect otherwise hidden illnesses so that they can be treated quickly and efficiently.
Education and Training
Harvard Med Sch, Boston Ma 1993
RadiologyAmerican Board of RadiologyABR
- Colonography: current status, research directions and challenges. Update 2002.
- Phenotypic variation in functional disorders of defecation.
- State-of-the-art imaging with 64-channel multidetector CT angiography.
- CT colonography using 360-degree virtual dissection: a feasibility study.
- Occult colorectal polyps on CT colonography: implications for surveillance.
- Neural ganglia visualized by endoscopic ultrasound.
- Relationship between noise, dose, and pitch in cardiac multi-detector row CT.
- Computer-aided detection (CAD) using 360 degree virtual dissection: can CAD in a first reviewer paradigm be a reliable substitute for primary 2D or 3D search?
- Noncathartic CT colonography with stool tagging: performance with and without electronic stool subtraction.
- Head-to-head comparison of oral contrast agents for cross-sectional enterography: small bowel distention, timing, and side effects.
- Dual-energy CT iodine-subtraction virtual unenhanced technique to detect urinary stones in an iodine-filled collecting system: a phantom study.
- Understanding the relationship between image quality and motion velocity in gated computed tomography: preliminary work for 4-dimensional musculoskeletal imaging.
- Formative evaluation of standardized training for CT colonographic image interpretation by novice readers.
- Detection of occult colonic perforation before CT colonography after incomplete colonoscopy: perforation rate and use of a low-dose diagnostic scan before CO2 insufflation.
- CAD of colon cancer on CT colonography cases without cathartic bowel preparation.
- In defense of body CT.
- The routine use of CT enterography with positive enteric contrast in patients with non-traumatic acute abdominal pain.
- Metal artifact reduction from reformatted projections for hip prostheses in multislice helical computed tomography: techniques and initial clinical results.
- ACR Colon Cancer Committee white paper: status of CT colonography 2009.
- Projection space denoising with bilateral filtering and CT noise modeling for dose reduction in CT.
- Automatic selection of tube potential for radiation dose reduction in CT: a general strategy.
- Detectability of urinary stones on virtual nonenhanced images generated at pyelographic-phase dual-energy CT.
- Pictorial review of colonic polyp and mass distortion and recognition with the CT virtual dissection technique.
- Dual-source dual-energy CT with additional tin filtration: Dose and image quality evaluation in phantoms and in vivo.
- Metal artifact suppression from reformatted projections in multislice helical CT using dual-front active contours.
- Optimal tube potential for radiation dose reduction in pediatric CT: principles, clinical implementations, and pitfalls.
- Computed tomography enterography detects intestinal wall changes and effects of treatment in patients with Crohn's disease.
- Identification of intraarticular and periarticular uric acid crystals with dual-energy CT: initial evaluation.
- Noise reduction in spectral CT: reducing dose and breaking the trade-off between image noise and energy bin selection.
- Virtual monochromatic imaging in dual-source dual-energy CT: radiation dose and
- Automated image-based colon cleansing for laxative-free CT colonography
- Noise reduction to decrease radiation dose and improve conspicuity of hepatic lesions at contrast-enhanced 80-kV hepatic CT using projection space denoising.
- Radiation dose reduction in computed tomography: techniques and future perspective.
- Effect on examination ordering by physician attitude, common knowledge, and practice behavior regarding CT radiation exposure.
- Individualization of abdominopelvic CT protocols with lower tube voltage to reduce i.v. contrast dose or radiation dose.
- Individualized kV selection and tube current reduction in excretory phase computed tomography urography: potential for radiation dose reduction and the contribution of iterative reconstruction to image quality.
- Effects of clonidine in women with fecal incontinence.
- Adaptive nonlocal means filtering based on local noise level for CT denoising.
- Reducing image noise in computed tomography (CT) colonography: effect of an integrated circuit CT detector.
- Methods for clinical evaluation of noise reduction techniques in abdominopelvic CT.
- CT enterography for Crohn's disease: optimal technique and imaging issues.
- CT and MR enterography in Crohn's disease: current and future applications.
- CT enterography: technical and interpretive pitfalls.
- NSAID enteropathy: appearance at CT and MR enterography in the age of multi-modality imaging and treatment.
- Characterization of inflammation and fibrosis in Crohn's disease lesions by magnetic resonance imaging.
- Maximizing Iodine Contrast-to-Noise Ratios in Abdominal CT Imaging through Use of Energy Domain Noise Reduction and Virtual Monoenergetic Dual-Energy CT.
- Technical Note: Measuring contrast- and noise-dependent spatial resolution of an iterative reconstruction method in CT using ensemble averaging.
- Dual- and Multi-Energy CT: Principles, Technical Approaches, and Clinical Applications.
- Characterization of Urinary Stone Composition by Use of Third-Generation Dual-Source Dual-Energy CT With Increased Spectral Separation.
- Dealing with Uncertainty in CT Images.
- Comparison of filtered back projection and iterative reconstruction in diagnosing appendicitis at 2-mSv CT.
- Validation of a Projection-domain Insertion of Liver Lesions into CT Images.
- Imaging patterns and focal lesions in fatty liver: a pictorial review.
- Impact of CT enterography on the diagnosis of small bowel gastrointestinal stromal tumors.
- Cross-sectional imaging in refractory celiac disease.
- Dual echo Dixon imaging with a constrained phase signal model and graph cuts reconstruction.
- Crohn's disease diagnosis, treatment approach, and management paradigm: what the radiologist needs to know.
- MR Imaging of Perianal Crohn Disease.
- Reducing Iodine Contrast Volume in CT Angiography of the Abdominal Aorta Using Integrated Tube Potential Selection and Weight-Based Method Without Compromising Image Quality.
- A multi-reader in vitro study using porcine kidneys to determine the impact of integrated circuit detectors and iterative reconstruction on the detection accuracy, size measurement, and radiation dose for small (<4 mm) renal stones.
- Society of Abdominal Radiology Disease-Focused Panel Program: rationale for its genesis and status report.
- Interdisciplinary Management of Perianal Crohn's Disease.
- Imaging and Screening of Cancer of the Small Bowel.
- Low-dose CT for the detection and classification of metastatic liver lesions: Results of the 2016 Low Dose CT Grand Challenge.
- Duodenal Crohn's Disease-a Diagnostic Conundrum.
- Reproducible imaging features of biologically aggressive gastrointestinal stromal tumors of the small bowel.
- MemberMinnesota Medical Association/Zumbro Valley
- Univ Iowa Hosps & Clinics, Diagnostic Radiology
- University Iowa Hosps and Clinics
- University of Iowa Hospitals & Clinics 1993
- Fellow - Gastrointestinal Radiology and Abdominal Imaging: Mayo Clinic in Rochester
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Patient Experience with Dr. Fletcher
- Everything You Need to Know About X-Rays
What is an X-ray procedure?An X-ray is a quick diagnostic procedure to see the insides of your body. It is an essential tool used to diagnose many health conditions. It involves passing a very tiny burst of invisible electromagnetic radiation to a part of your body or your whole body and capturing...
- How to Prepare for a Biopsy
A biopsy procedure is a very important procedure, which is used to identify the underlying cause of your abnormal body tissues. Depending on your condition and the location of the tissue abnormality, different types of biopsies may be performed on you. A biopsy preparation, therefore, depends on...
- What is Compartment Syndrome?
Compartment syndrome refers to the excessive buildup of pressure within the muscle compartments of the body. This will affect the functioning of the nerves and lead to cell death based on the intensity and duration of the pressure built up. Bleeding and inflammation after an injury usually leads to...
- What Is an X-Ray?
An X-ray is a type of electromagnetic radiation, which can be used to take digital images of parts of the human body. It is the same with visible light but has a certain different characteristic. The beneficial use of an X-ray is for medical imaging. It can help the physician to look inside your...
- What to Expect After a Biopsy
Biopsies may vary differently depending on the type and location of the tissues and how hard are they to obtain. The medical term used to describe such method is “invasiveness.” A less invasive procedure will, for example, take place in a doctor’s office the same day an abnormal tissue is...
- Everything You Need to Know About Biopsy Procedures
What is a biopsy?A biopsy is a medical procedure, which is mostly used in diagnosing cancer. In this procedure, a small tissue sample is taken from your body for a closer examination under the microscope. A biopsy is usually recommended by your doctor if initial tests in your body suggest an...
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