Tzu‐Chieh Chao

ORCID: 0000-0003-1348-2144
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About
Contact & Profiles
Research Areas
  • Radiation Therapy and Dosimetry
  • Advanced Radiotherapy Techniques
  • Thyroid Cancer Diagnosis and Treatment
  • Radiation Dose and Imaging
  • Thyroid and Parathyroid Surgery
  • Radiation Detection and Scintillator Technologies
  • Head and Neck Anomalies
  • Medical Imaging Techniques and Applications
  • Neuroendocrine Tumor Research Advances
  • Radiation Effects in Electronics
  • Advanced X-ray and CT Imaging
  • Breast Lesions and Carcinomas
  • BRCA gene mutations in cancer
  • Ovarian cancer diagnosis and treatment
  • Nuclear Physics and Applications
  • Breast Cancer Treatment Studies
  • Radiation Effects and Dosimetry
  • Thyroid Disorders and Treatments
  • Cancer Diagnosis and Treatment
  • Gallbladder and Bile Duct Disorders
  • Cancer and Skin Lesions
  • Gastrointestinal Tumor Research and Treatment
  • Pituitary Gland Disorders and Treatments
  • Pediatric Hepatobiliary Diseases and Treatments
  • Gastric Cancer Management and Outcomes

Chang Gung University
2016-2025

Chang Gung Memorial Hospital
2015-2025

Taipei City Hospital
2022-2024

Linkou Chang Gung Memorial Hospital
2008-2022

Chung Shan Medical University Hospital
2020

Ministry of Health and Welfare
2015

Memorial Hospital of South Bend
1999-2015

Tungs' Taichung MetroHarbor Hospital
2011

Atomic Energy Council
2011

National Tsing Hua University
2011

Human anatomical models have been indispensable to radiation protection dosimetry using Monte Carlo calculations. Existing MIRD-based mathematical are easy compute and standardize, but they simplified crude compared human anatomy. This article describes the development of an image-based whole-body model, called VIP-Man, transversal color photographic images obtained from National Library Medicine's Visible Project for organ dose calculations involving photons, electron, neutrons, protons. As...

10.1097/00004032-200005000-00003 article EN Health Physics 2000-05-01

Metaplastic carcinomas of the breast are rare neoplasms. The purpose present study is to better characterize clinical course, treatment, and prognostic factors metaplastic carcinomas.Data 14 patients with carcinoma were retrospectively reviewed. follow-up period ranged from 2 months 10 years, (median 4.3 years).The patients' ages 38 66 years 50.5 years). tumors 2.5 18 cm 4.8 cm) in size. Seven had axillary nodal metastases at time diagnosis. Estrogen progesterone receptors positive only one...

10.1002/(sici)1096-9098(199908)71:4<220::aid-jso3>3.0.co;2-l article EN Journal of Surgical Oncology 1999-08-01

Thyroid nodule is common disorder in endocrine clinics. In Taiwan, thyroid ultrasonography with fine-needle aspiration cytology (FNAC) the first-line examination procedure. Data large series on incidence of malignancy presenting nodules are lacking this area. To determine and compare results other populations, investigation retrospectively reviewed 21,748 subjects who were examined one medical center from January 1986 to December 1999. All patients underwent studies using a real-time...

10.1089/thy.2005.15.708 article EN Thyroid 2005-07-01

Background and Objectives : The purpose of this study was to retrospectively analyze the features patients with papillary thyroid carcinoma (PTC) presenting neck lymph node (LN) metastasis. Methods enrolled 909 PTC who had undergone total thyroidectomy. After a median follow‐up 14.6 years, 73 (8.0%) died cancer. A 536 tumor confined (intra‐thyroid), 111 metastasis, 225 showed soft tissue invasion, 37 distant Results Compared intra‐thyroid group, group LN metastases larger size, higher...

10.1002/jso.23967 article EN cc-by-nc-nd Journal of Surgical Oncology 2015-07-15

There is limited clinical information comparing presentations and results of treatment papillary follicular thyroid carcinoma patients with distant metastases. We retrospectively analyzed data 1,257 cancer who received their follow-up at Chang Gung Memorial Hospital. found 992 205 carcinoma. Of these, 68 (6.9%) had metastases the time diagnosis or during period. patients, 69 (33.7%) carcinoma, only 33 were categorized as stage IV diagnosis. Nine I 10 II, 16 III. Sixteen (23.5%) died study...

10.1089/thy.1999.9.1227 article EN Thyroid 1999-12-01

PROBLEM: In general, females have a more active immune response than do males. The effects of female sex hormones on lymphocytes been studied extensively but their macrophages are poorly understood. METHOD: this study, peritoneal (M0) obtained from male rats were treated in vitro with estradiol (E 2 ), progesterone (P), testosterone (TS), or hydrocortisone (HC) and superoxide, hydrogen peroxide, nitrite release determined. RESULTS: At concentrations between 10 −10 −9 M, had no significant...

10.1111/j.1600-0897.1994.tb00877.x article EN American Journal of Reproductive Immunology 1994-08-01

This study was to investigate the clinical features and therapeutic outcomes of multifocal papillary thyroid microcarcinoma (PTMC). A total 2,418 carcinoma (PTC) patients had undergone thyroidectomy in one medical center between 1977 2010. There were 483 (20.0%) diagnosed with PTC. The percentage PTC higher PTMC (22.0%) than non-PTMC (19.5%). Demographic characteristics traced. Multifocal presented smaller tumors at an older age, a underwent or complete thyroidectomy. These also showed...

10.1155/2013/809382 article EN cc-by International Journal of Endocrinology 2013-01-01

Papillary thyroid carcinoma (PTC) patients with distant metastasis (DM) have variable clinical courses and therapeutic outcomes. Survival time after diagnosis of DM may be several months to years. Long-term follow-up is necessary determine prognostic factors for survival in PTC DM. The purpose this study was investigate the features outcomes 10 years follow-up. population consisted 70 who underwent initial thyroidectomy before 2004 had beyond locoregional neck area. Of these patients, 40...

10.1097/md.0000000000001063 article EN cc-by-nc Medicine 2015-07-01

A new set of conversion coefficients from kerma free-in-air to absorbed dose and effective VIP-Man has been calculated for external monoenergetic photon beams 10 keV MeV using an image-based whole-body anatomical model. This model, called VIP-Man, was recently developed at Rensselaer the high-resolution color images National Library Medicine's Visible Human Project. An EGS4-based Monte Carlo user code, named EGS4-VLSI, efficiently process extremely large image data in VIP-Man. Irradiation...

10.1097/00004032-200108000-00010 article EN Health Physics 2001-08-01

Abstract Background Gastrointestinal stromal tumors (GISTs), the most common type of mesenchymal gastrointestinal (GI) tract, demonstrate positive kit staining. We report our surgical experience with 100 small intestine GIST patients and identify predictors for long-term disease-free survival (DFS) overall (OS) to clarify difference between high- low-risk patients. Methods The clinicopathologic follow-up records who were treated at Chung Gung Memorial Hospital 1983 2002 retrospectively...

10.1186/1471-230x-6-29 article EN cc-by BMC Gastroenterology 2006-10-24

Limited information is available on the presentation, treatment outcomes, and prognostic factors of papillary thyroid carcinoma with lung metastases.This study retrospectively analyzed data 2003 patients cancer who were treated followed up at Chang Gung Memorial Hospital from January 1979 to December 2002. In total, 1516 carcinomas enrolled. One hundred two (6.7%) metastases including 57 women mean age 41.7 +/- 17.3 years 45 men 49.6 17.2 years. These included 52 presented time diagnosis....

10.1089/thy.2004.14.1091 article EN Thyroid 2004-12-01

The follicular variant of papillary thyroid carcinoma (FVPTC) presents with biological and morphological features similar to carcinoma. Pre-operative diagnosis FVPTC its clinical course is important in identifying appropriate surgical procedures. This study enrolled 85 patients, 68 females (mean age 41.4±13.7 years) 17 males 50.1±12.3 carcinomas diagnosed as FVPTC. From the patient database at Chang Gung Medical Center (CGMC), 170 pure cases minimally invasive gender- age-matched patients...

10.1093/jjco/hyl093 article EN Japanese Journal of Clinical Oncology 2006-09-25

Hepatic hemangiomas are the most common benign hepatic tumors, and they usually asymptomatic with normal liver function. When reach 4 cm, we define them as giant hemangiomas. Treatment options for observation, surgical resection, transcatheter arterial embolization. The aim of this study was to identify risk factors complications.In study, records 61 patients treated resection at Chang Gung Memorial Hospital, Linkou were retrospectively reviewed. Data on clinical variables including...

10.4103/2319-4170.106164 article EN cc-by-nc-nd Biomedical Journal 2012-01-01

Objectives/Hypothesis The correlation between incidental parathyroidectomy (IP) during thyroidectomy and postoperative hypocalcemia remains controversial. Our aim was to investigate the incidence of IP, risk factors, impact on patient outcomes. Study Design Retrospective cohort study. Methods This a retrospective observational study including 3,186 consecutive patients who underwent January 2007 December 2014. were divided into two groups: IP group non‐IP. Numerous clinical parameters...

10.1002/lary.26448 article EN The Laryngoscope 2017-01-25
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