Chiral, Thermally Irreversible and Quasi-Stealth Photochromic Dopant to Control Selective Reflection Wavelength of Cholesteric Liquid Crystal.

The front cover artwork is provided by the group of Prof. Emeritus Yasushi Yokoyama and Prof. Takashi Ubukata.

Chiral, Thermally Irreversible and Quasi-Stealth Photochromic Dopant to Control Selective Reflection Wavelength of Cholesteric Liquid Crystal.

A chiral and thermally irreversible photochromic fulgide derivative incorporating an (R)-binaphthol unit in its acid anhydride moiety was used for the photoswitching of the pitch length of cholesteric liquid crystals. Since the absorption maximum wavelengths of both thermally stable photoisomers are nearly in the UV region (quasi-stealth photochromism), it can be exposed to visible light without inducing photochromic reactions. Therefore, when the photoswitching molecule is added to a permanent cholesteric liquid crystal whose reflection light wavelength is in the visible region, the UV light-induced photochromic reaction of the photoswitching molecule changes the wavelength of the reflection light in the visible light region.

Quantitative MDCT analysis of pulmonary solid nodules using three parameters.

Purpose: The purpose of this prospective study was to perform quantitative multidetector computed tomography (MDCT) analysis of pulmonary solid nodules using three parameters (long-short ratio, compactness, and intranodular CT number) and to evaluate the usefulness of each parameter in the differentiation of the nodules.

Materials And Methods: Seventy solitary pulmonary nodules with a long axis length of 5-30 mm were examined using one multidetector CT (MDCT) system and one three-dimensional (3D) system, and the findings regarding the three parameters were statistically analyzed among five diseases (hamartoma, organizing pneumonia, adenocarcinoma, squamous cell carcinoma, and metastasis).

Results: The long-short ratio of the pulmonary nodule showed no significant differences among five diseases.

Sonographic assessment of thyroglossal duct cysts in children.

Objective: The purpose of this study was to clarify the sonographic features of thyroglossal duct cysts (TDCs) in children. We also investigated how the presence of inflammation influences the sonographic appearance.

Methods: We reviewed the sonograms from 36 children (0.

Pharyngitis of infectious mononucleosis: computed tomography findings.

Two women presented with sore throat and fever. Their symptoms were not alleviated by antibiotics. Cervical computed tomography (CT) with contrast enhancement demonstrated enlargement of predominant posterior cervical lymph nodes and streaky heterogeneous tonsils with interspersed low attenuation.

Spontaneous hemothorax in hereditary multiple exostosis involving the ribs.

Exostosis occurs in the ribs either sporadically or as a manifestation of a genetic disorder known as hereditary multiple exostoses. Costal exostosis may cause chest pain and, on rare occasions, result in hemothorax. We report a case of hemothorax owing to costal exostosis in a 4-year-old boy.

Midterm postoperative clinicoradiologic analysis of surgery for high/intermediate-type imperforate anus: prospective comparative study between laparoscopy-assisted and posterior sagittal anorectoplasty.

Purpose: The objective of this study is to analyze the outcome of surgery for high/intermediate-type imperforate anus using anal endosonography (AES), magnetic resonance imaging (MRI), and a continence evaluation questionnaire (CEQ).

Methods: In this study, 24 cases of high/intermediate-type imperforate anus were studied. Fifteen of 24 had Georgeson's laparoscopy-assisted anorectoplasty (GLA), and 9 of 24 had Pena's posterior sagittal anorectoplasty (PPA).

Adrenal schwannoma: CT and MRI findings.

We report a case of adrenal schwannoma, an extremely rare retroperitoneal neoplasm. The patient was a 33-year-old man who presented with an abdominal mass that was discovered at abdominal sonography. Computed tomography showed an 8-cm well-circumscribed homogeneous mass that enhanced slightly after intravenous administration of contrast material.

Aneurysm of a systemic artery supplying the normal basal segments of the left lower lobe.

The case of an aneurysm of a systemic artery supplying otherwise normal basal segments of the left lower lobe is presented. The diagnosis was correctly made postprocessed with three-dimensional reformatting using a multidetector row CT (MDCT) scanner. Conventional angiography was obviated.

Extension of ductal carcinoma in situ: histopathological association with MR imaging and mammography.

The purpose of this study is to evaluate the capability of breast MRI (magnetic resonance imaging) and mammography in determining tumor extent and the detectability of ductal carcinoma in situ (DCIS) in association with histopathological features. Thirty women with breast cancer underwent 3D dynamic MRI. Twelve women had pure DCIS and 18 women had DCIS with microinvasion.

Focal sparing of segment 2 in fatty liver: US appearance.

Purpose: To determine the frequency and sonographic features of focal sparing of fatty liver at segment 2.

Materials And Methods: The sonographic database was searched over the preceding three years. The criteria for sonographic diagnosis of focal sparing of fatty liver was an area of liver parenchyma of relatively low echogenicity with lack of mass effect.

Intraoperative endosonography enhances laparoscopy-assisted colon pull-through for high imperforate anus.

Purpose: The authors used ultrasonographic endoprobes during laparoscopy-assisted colon pull-through (LACPT) for the repair of high imperforate anus to confirm the pull-through canal was surrounded symmetrically by pelvic floor muscles.

Methods: Six patients with high imperforate anus were treated by LACPT (mean age at LACPT, 8.2 months).

Peritoneal endometriosis in the broad ligament presenting as a large tumor.

Peritoneal endometriosis presenting as a tumor is very rare. A case of peritoneal endometriosis in the broad ligament presenting as a large tumor is reported. A 39-year-old woman had a solid and cystic tumor with many microcysts, measuring 17 x 13 x 3.

Uterine tumors resembling ovarian sex-cord tumors producing parathyroid hormone-related protein of the uterine cervix.

A case of uterine tumors resembling ovarian sex-cord tumors (UTROSCT) producing parathyroid hormone-related protein (PTH-rP) of the uterine cervix is reported. A 66-year-old woman underwent total hysterectomy with bilateral salpingo -oophorectomy due to the possibility of a malignant uterine tumor. A fairly well-circumscribed tumor, measuring 8 x 5 x 7 cm, was present in the myometrium of the cervix and extended into the endocervical mucosa.