Der Uterusmuskel: Morphologie

Wetzstein, R.

doi:10.1007/bf00672102

Cited by 28 publications

(16 citation statements)

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“…In general contrast to our findings, his proposed structure would probably lead to an MR DTI measurement indicating a completely unordered set of diffusion vectors. This study is rather in agreement with Wetzstein's and Renn's findings (Wetzstein, 1965;Wetzstein and Renn, 1970), in that we could not identify continuous long fibers in large parts of the stratum vasculare. On the other hand, anisotropy was found in most parts of the uterus, whereas they reported uniformly distributed muscle fiber directions in the corpus uteri.…”

Section: Discussionsupporting

confidence: 93%

“…The overall arrangement of the muscle fibers in the human uterus has been extensively investigated since the end of the 19th century (Werth and Grusdew, 1898;Goerttler, 1929Goerttler, , 1931Wagner, 1950;Jaisle, 1964;Wetzstein, 1965;Schwalm and Dubrauszky, 1966;Goerttler, 1968;Renn, 1970;Wetzstein and Renn, 1970). Goerttler (1929Goerttler ( , 1931Goerttler ( , 1968 examined unstained 50 -100 m thick slides of myometrium under crosslight and under transmitted light with polarization filters.…”

mentioning

confidence: 99%

“…He concluded that the uterine wall consists of two counterrotating systems of spirals. Wetzstein and Renn (Wetzstein, 1965;Wetzstein and Renn, 1970) analyzed 20 -50 m thick alum hematoxylinstained slides using the same method. Additionally, they determined the angular distribution of muscle fibers according to a fixed direction in the dorsal uterine wall (stratum vasculare) with 15,000 measurements.…”

mentioning

confidence: 99%

“…The muscle fiber architecture of the cervix uteri likewise consists of bundles running in an approximately circular fashion (Goerttler, 1929;Wetzstein, 1965), two fiber systems running at acute angles, and the continuation of the fibers of the parametrium (Lierse, 1960). The collagen fibers in the human cervix are structured into three layers.…”

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confidence: 99%

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Three‐dimensional fiber architecture of the nonpregnant human uterus determined ex vivo using magnetic resonance diffusion tensor imaging

et al. 2005

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The global muscle and collagen fiber orientation in the human uterus has been analyzed hitherto by various standard microscopic techniques. However, no widely accepted model of the fiber architecture of the myometrium could be acquired. The purpose of the present study was to investigate the uterus by magnetic resonance (MR) diffusion tensor imaging (DTI) in a 3D macroscopic approach. Ex vivo MR DTI measurements were performed on five uteri from nonpregnant patients. The main diffusion directions reflecting the orientation of directional structures in the examined tissues were determined from diffusion-weighted spin-echo measurements. A fiber tracking algorithm was used to extrapolate the fiber architecture. The method was validated against histological slides and indirectly through the analysis of leiomyomas, which exhibit less anisotropy than normal myometrium. Significant anisotropy was found in most regions of all examined nonpregnant human uteri. But only two systems of fibers were found running circularly along the intramural part of the uterine tubes. They merged caudally and built a close fitting envelope of circular layers around the uterine cavity. On the cervix, circular fibers were observed in the outer part as well as mostly longitudinal fibers in the inner part. These results confirm the existence of directional structures in the complex fiber architecture of the human uterus. They also indicate that MR DTI is a beneficial and complementary tool to standard microscopic techniques to determine the intrinsic fiber architecture in human organs.

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Section: Discussionsupporting

confidence: 93%

mentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Three‐dimensional fiber architecture of the nonpregnant human uterus determined ex vivo using magnetic resonance diffusion tensor imaging

et al. 2005

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“…Phylogenetisch und ontogenetisch stellt die Archimetra oder die endometrial-subendometriale Einheit den ältesten Teil der Gebär-mutter dar. Sie besteht aus dem epithelialen und stromalen Anteil des Endometriums und der unmittelbar darunterliegenden Muskulatur mit vorwiegend zirkulär angeordneten Muskelfasern (Werth u. Grusdew 1898;Wetzstein 1965;Noe et al 1999). Diese Schicht zirkulärer Muskelfasern beginnt kaudal in der Höhe der unteren Zervix und durchzieht das Corpus uteri als Stratum subvasculare und setzt sich über die Cornua uteri als tubare Ringmuskulatur in den Eileitern fort (Abb.…”

Section: Die Archimetra ± Struktur Und Funktionunclassified