Abstract
Background The thickness and signal intensity (SI) of normal uterine endometrium on T2-weighted (T2W) imaging changes depend on the menstrual cycle phase. Cases of normal endometrium that appear similar to endometrial lesions sometimes occur, and may result in misdiagnosis. Purpose To investigate normal endometrial appearance in luteal phase (LP) compared to that in follicular phase (FP), and to differentiate these appearances with those of endometrial lesions. Material and Methods Thirty-two normal volunteers prospectively underwent magnetic resonance (MR) examinations during LP and FP. Patients with pathologically confirmed endometrial polyps ( n = 9), hyperplasia ( n = 7), and cancer ( n = 15), who underwent MR examinations, were evaluated for comparison. Endometrial appearance was categorized into the following five types on sagittal T2W imaging and compared between LP, FP, and endometrial lesions: type 1, homogeneous higher SI; type 2, homogeneous iso SI; type 3, a bright midline and a peripheral iso SI layer; type 4, a lower/iso SI central line; and type 5, heterogeneous lower/iso SI. Endometrial thickness and SI were measured and also compared. Results Endometrial lesions were more frequently categorized as type 5 than n...Continue Reading
References
Jan 1, 1990·Radiographics : a Review Publication of the Radiological Society of North America, Inc·H V PosniakV Bychkov
Apr 1, 1989·Radiology·S McCarthyJ Gore
Jun 1, 1986·Radiology·J L WorthingtonB L McClennan
Nov 1, 1988·Magnetic Resonance Imaging·C L JanusN Laufer
Nov 1, 1986·Radiology·D R HaynorA A Moss
Jul 1, 1986·Radiology·S McCarthyJ Gore
Feb 1, 1987·Radiology·H HricakC G Lacey
Apr 1, 1986·Radiology·B E DemasR B Jaffe
Oct 1, 1985·Radiology·J K LeeG Gapp
Dec 1, 1983·AJR. American Journal of Roentgenology·H HricakP E Sheldon
Jan 22, 2000·Radiology·R P GraselS M Hussain
Nov 14, 2001·Radiographics : a Review Publication of the Radiological Society of North America, Inc·K M NalaboffE Ben-Levi
Oct 28, 2003·Topics in Magnetic Resonance Imaging : TMRI·Sidhartha ChaudhrySharad Maheshwari
May 23, 2007·AJR. American Journal of Roentgenology·Evis SalaDavid Lomas
Jan 22, 2009·Obstetrics and Gynecology·UNKNOWN American College of Obstetricians and Gynecologists
Apr 28, 2009·American Journal of Obstetrics and Gynecology·Susan D ReedNoel S Weiss
Aug 3, 2010·Journal of Magnetic Resonance Imaging : JMRI·Koji FujimotoKaori Togashi
Jan 8, 2011·Radiology·Hebert Alberto VargasHedvig Hricak
Jul 5, 2011·Journal of the American College of Radiology : JACR·Genevieve L BennettCarolyn M Zelop
Jan 13, 2012·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Peter BeddyEvis Sala
May 11, 2013·Journal of Obstetrics and Gynaecology Canada : JOGC = Journal D'obstétrique Et Gynécologie Du Canada : JOGC·Marie-Claude RenaudUNKNOWN SPECIAL CONTRIBUTORS