TOKYO (Reuters) - Toshiba Corp (>> Toshiba Corp) said its board of directors would hold a meeting on Wednesday to discuss the planned sale of its medical equipment unit and announce the outcome swiftly if a decision is reached.

The cash-strapped Japanese company said in a statement it had not yet decided on the likely buyer, responding to a report by the Nikkei business daily that Canon Inc (>> Canon Inc) was the front-runner with a bid of more than 700 billion yen (4 billion pounds).

The auction of Toshiba Medical Systems Corp, aimed at shoring up Toshiba's capital after a $1.3 billion accounting scandal, represents an unexpected opportunity for rivals to get their hands on a respected manufacturer of diagnostic equipment such as X-ray and magnetic resonance imaging (MRI) systems.

People familiar with the process had told Reuters earlier the contest for a crucial piece of Toshiba appears to be turning into a match-up between two longtime stalwarts of the Japanese tech industry - Fujifilm Holdings Corp (>> FUJIFILM Holdings Corp) Chief Executive Shigetaka Komori and Canon CEO Fujio Mitarai.

Konica Minolta Inc (>> Konica Minolta Inc), in partnership with European private equity firm Permira [PERM.UL], also remains in the bidding, one person said.

Toshiba Medical, the world's second-largest manufacturer of CT scan machines, had annual revenues of 405.6 billion yen in the financial year ended March 2015.

(Reporting by Chang-Ran Kim; Editing by Stephen Coates)