Thin-slice acquisition and multiplanar imaging should be obtained. For the purposes of this document, we make a distinction between MRU and MRI abdomen and pelvis without and with IV contrast. MRI abdomen and pelvis without and with IV contrast is defined as any protocol not specifically tailored for evaluation of the upper and lower urinary tracts, without both the precontrast and excretory phases, and without heavily T2-weighted images of the urinary tract. Discussion of Procedures by Variant Variant 1: Microhematuria. No risk factors, or history of recent vigorous exercise, or presence of infection, or viral illness, or present or recent menstruation. Initial imaging. Patients without risk factors and with a known benign cause of microhematuria are unlikely to gain any benefit from a complete imaging workup of microscopic hematuria. Multiple studies have shown that patients in this category do not derive any benefit from imaging [1,2,6,7]. Arteriography Kidney Arteriography is not used as a first-line imaging modality for the evaluation of microhematuria. There is no relevant literature regarding the use of arteriography for the initial evaluation of microhematuria. CT Abdomen and Pelvis For the purposes of this document, we make a distinction between CTU and CT abdomen and pelvis without and with IV contrast. CT abdomen and pelvis without and with IV contrast is defined as any protocol not specifically tailored for evaluation of the upper and lower urinary tracts and without both the precontrast and excretory phases. CT without IV contrast may be a reasonable option in the setting of microhematuria in patients <50 years of age [8]. There is no relevant literature regarding the use of CT with IV contrast for the initial evaluation of microhematuria. CTU CTU CTU is not useful as a first-line imaging modality for the evaluation of microhematuria in patients with no known risk factors and with an identified benign cause of microhematuria.
Hematuria. Thin-slice acquisition and multiplanar imaging should be obtained. For the purposes of this document, we make a distinction between MRU and MRI abdomen and pelvis without and with IV contrast. MRI abdomen and pelvis without and with IV contrast is defined as any protocol not specifically tailored for evaluation of the upper and lower urinary tracts, without both the precontrast and excretory phases, and without heavily T2-weighted images of the urinary tract. Discussion of Procedures by Variant Variant 1: Microhematuria. No risk factors, or history of recent vigorous exercise, or presence of infection, or viral illness, or present or recent menstruation. Initial imaging. Patients without risk factors and with a known benign cause of microhematuria are unlikely to gain any benefit from a complete imaging workup of microscopic hematuria. Multiple studies have shown that patients in this category do not derive any benefit from imaging [1,2,6,7]. Arteriography Kidney Arteriography is not used as a first-line imaging modality for the evaluation of microhematuria. There is no relevant literature regarding the use of arteriography for the initial evaluation of microhematuria. CT Abdomen and Pelvis For the purposes of this document, we make a distinction between CTU and CT abdomen and pelvis without and with IV contrast. CT abdomen and pelvis without and with IV contrast is defined as any protocol not specifically tailored for evaluation of the upper and lower urinary tracts and without both the precontrast and excretory phases. CT without IV contrast may be a reasonable option in the setting of microhematuria in patients <50 years of age [8]. There is no relevant literature regarding the use of CT with IV contrast for the initial evaluation of microhematuria. CTU CTU CTU is not useful as a first-line imaging modality for the evaluation of microhematuria in patients with no known risk factors and with an identified benign cause of microhematuria.