A clinical study for the development of Magnetic Resonance Imaging (MRI) of the testis in healthy adult subjects

An interventional study aiming at the development of a non-contrast enhanced MRI test method for the testis in healthy adult subjects - An interventional study aiming at the development of a non-contrast enhanced MRI test method for the testis

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000042373

Enrollment

Registered

2020-11-06

Start date

2021-03-26

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Male infertility

Interventions

Non-contrast-enhanced magnetic resonance imaging test

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1) Male individuals aged more than 20 years but no more than 50 years 2) Those whose spouse or female partner gave birth more than one child by normal pregnancy or those whose sperm test result is normal i.e. sperm count is more than 15 million per milliliter and motility rate is more than 40% according to WHO criteria version 5. 3) Those who do not have a congenital anomaly in the urogenital organs and who do not have a medical history and/or treatment history of any urogenital disorder and any trauma in the urogenital organs. 4) Those who do not have a medical history and/or treatment history of varicocele. 5) Those who do not have medical history and treatment history of malignant tumors, endocrinology disorders, and autoimmune diseases. 6) Those who do not have a medication history of hormonal agents

Exclusion criteria

Exclusion criteria: 1) Individuals who may consent for participation in this study under duress. 2) Those who have a ferromagnetic metal item in their body. 3) Those who have claustrophobia 4) Those who have tattoos 5) Those who have neurological disorders 6) Those who have cognitive impairment 7) Those who have psychological disorders including depression, schizophrenia, and bipolar disorder. 8) Those whom physicians have judged inappropriate for participation in this research study

Design outcomes

Primary

Measure	Time frame
The feasibility of magnetic resonance imaging (MRI) test of the testis that is capable of visualizing a testicular region where spermatogenesis is highly activated. To accomplish a high quality MRI test, a circular radiofrequency coil will be used and the testis will be immobilized during the MRI test by using a special underwear.	—

Countries

Japan

Contacts

Public ContactMasayuki Yamaguchi

National Cancer Center Exploratory Oncology Research & Clinical Trial Center Division of Functional Imaging

masyamag@east.ncc.go.jp04-7134-6832

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026